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Finding the Fourth Proportional to 70,442.89, 97,212.87 and 38,613.53

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Solution

The fourth proportional to 70,442.89, 97,212.87 and 38,613.53 is: 53,287.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,442.89 : 97,212.87 = 38,613.53 : x
  2. Step 2: Convert to fraction form
    70,442.89/97,212.87 = 38,613.53/x
  3. Step 3: Cross multiply
    70,442.89x = 97,212.87 × 38,613.53
  4. Step 4: Simplify right side
    70,442.89x = 3,753,732,072.13
  5. Step 5: Solve for x
    x = 3,753,732,072.13/70,442.89
  6. Step 6: Final answer
    x = 53,287.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.